dlls/msi/helpers.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2005 Aric Stewart for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 /*
  22  * Here are helper functions formally in action.c that are used by a variety of
  23  * actions and functions.
  24  */
  25
  26 #include <stdarg.h>
  27
  28 #include "windef.h"
  29 #include "wine/debug.h"
  30 #include "msipriv.h"
  31 #include "winuser.h"
  32 #include "wine/unicode.h"
  33 #include "msidefs.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msi);
  36
  37 static const WCHAR cszTargetDir[] = {'T','A','R','G','E','T','D','I','R',0};
  38 static const WCHAR cszDatabase[]={'D','A','T','A','B','A','S','E',0};
  39
  40 LPWSTR build_icon_path(MSIPACKAGE *package, LPCWSTR icon_name )
  41 {
  42     LPWSTR SystemFolder, dest, FilePath;
  43
  44     static const WCHAR szInstaller[] =
  45         {'M','i','c','r','o','s','o','f','t','\\',
  46          'I','n','s','t','a','l','l','e','r','\\',0};
  47     static const WCHAR szFolder[] =
  48         {'A','p','p','D','a','t','a','F','o','l','d','e','r',0};
  49
  50     SystemFolder = msi_dup_property( package, szFolder );
  51
  52     dest = build_directory_name(3, SystemFolder, szInstaller, package->ProductCode);
  53
  54     create_full_pathW(dest);
  55
  56     FilePath = build_directory_name(2, dest, icon_name);
  57
  58     msi_free(SystemFolder);
  59     msi_free(dest);
  60     return FilePath;
  61 }
  62
  63 LPWSTR msi_dup_record_field( MSIRECORD *rec, INT field )
  64 {
  65     DWORD sz = 0;
  66     LPWSTR str;
  67     UINT r;
  68
  69     if (MSI_RecordIsNull( rec, field ))
  70         return NULL;
  71
  72     r = MSI_RecordGetStringW( rec, field, NULL, &sz );
  73     if (r != ERROR_SUCCESS)
  74         return NULL;
  75
  76     sz ++;
  77     str = msi_alloc( sz * sizeof (WCHAR) );
  78     if (!str)
  79         return str;
  80     str[0] = 0;
  81     r = MSI_RecordGetStringW( rec, field, str, &sz );
  82     if (r != ERROR_SUCCESS)
  83     {
  84         ERR("failed to get string!\n");
  85         msi_free( str );
  86         return NULL;
  87     }
  88     return str;
  89 }
  90
  91 MSICOMPONENT* get_loaded_component( MSIPACKAGE* package, LPCWSTR Component )
  92 {
  93     MSICOMPONENT *comp;
  94
  95     LIST_FOR_EACH_ENTRY( comp, &package->components, MSICOMPONENT, entry )
  96     {
  97         if (lstrcmpW(Component,comp->Component)==0)
  98             return comp;
  99     }
 100     return NULL;
 101 }
 102
 103 MSIFEATURE* get_loaded_feature(MSIPACKAGE* package, LPCWSTR Feature )
 104 {
 105     MSIFEATURE *feature;
 106
 107     LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
 108     {
 109         if (lstrcmpW( Feature, feature->Feature )==0)
 110             return feature;
 111     }
 112     return NULL;
 113 }
 114
 115 MSIFILE* get_loaded_file( MSIPACKAGE* package, LPCWSTR key )
 116 {
 117     MSIFILE *file;
 118
 119     LIST_FOR_EACH_ENTRY( file, &package->files, MSIFILE, entry )
 120     {
 121         if (lstrcmpW( key, file->File )==0)
 122             return file;
 123     }
 124     return NULL;
 125 }
 126
 127 int track_tempfile( MSIPACKAGE *package, LPCWSTR path )
 128 {
 129     MSITEMPFILE *temp;
 130
 131     TRACE("%s\n", debugstr_w(path));
 132
 133     LIST_FOR_EACH_ENTRY( temp, &package->tempfiles, MSITEMPFILE, entry )
 134         if (!lstrcmpW( path, temp->Path ))
 135             return 0;
 136
 137     temp = msi_alloc_zero( sizeof (MSITEMPFILE) );
 138     if (!temp)
 139         return -1;
 140
 141     list_add_head( &package->tempfiles, &temp->entry );
 142     temp->Path = strdupW( path );
 143
 144     return 0;
 145 }
 146
 147 MSIFOLDER *get_loaded_folder( MSIPACKAGE *package, LPCWSTR dir )
 148 {
 149     MSIFOLDER *folder;
 150
 151     LIST_FOR_EACH_ENTRY( folder, &package->folders, MSIFOLDER, entry )
 152     {
 153         if (lstrcmpW( dir, folder->Directory )==0)
 154             return folder;
 155     }
 156     return NULL;
 157 }
 158
 159 void msi_reset_folders( MSIPACKAGE *package, BOOL source )
 160 {
 161     MSIFOLDER *folder;
 162
 163     LIST_FOR_EACH_ENTRY( folder, &package->folders, MSIFOLDER, entry )
 164     {
 165         if ( source )
 166         {
 167             msi_free( folder->ResolvedSource );
 168             folder->ResolvedSource = NULL;
 169         }
 170         else
 171         {
 172             msi_free( folder->ResolvedTarget );
 173             folder->ResolvedTarget = NULL;
 174         }
 175     }
 176 }
 177
 178 static LPWSTR get_source_root( MSIPACKAGE *package )
 179 {
 180     LPWSTR path, p;
 181
 182     path = msi_dup_property( package, cszSourceDir );
 183     if (path)
 184         return path;
 185
 186     path = msi_dup_property( package, cszDatabase );
 187     if (path)
 188     {
 189         p = strrchrW(path,'\\');
 190         if (p)
 191             *(p+1) = 0;
 192     }
 193     return path;
 194 }
 195
 196 /*
 197  * clean_spaces_from_path()
 198  *
 199  * removes spaces from the beginning and end of path segments
 200  * removes multiple \\ characters
 201  */
 202 static void clean_spaces_from_path( LPWSTR p )
 203 {
 204     LPWSTR q = p;
 205     int n, len = 0;
 206
 207     while (1)
 208     {
 209         /* copy until the end of the string or a space */
 210         while (*p != ' ' && (*q = *p))
 211         {
 212             p++, len++;
 213             /* reduce many backslashes to one */
 214             if (*p != '\\' || *q != '\\')
 215                 q++;
 216         }
 217
 218         /* quit at the end of the string */
 219         if (!*p)
 220             break;
 221
 222         /* count the number of spaces */
 223         n = 0;
 224         while (p[n] == ' ')
 225             n++;
 226
 227         /* if it's leading or trailing space, skip it */
 228         if ( len == 0 || p[-1] == '\\' || p[n] == '\\' )
 229             p += n;
 230         else  /* copy n spaces */
 231             while (n && (*q++ = *p++)) n--;
 232     }
 233 }
 234
 235 LPWSTR resolve_file_source(MSIPACKAGE *package, MSIFILE *file)
 236 {
 237     LPWSTR p, path;
 238
 239     TRACE("Working to resolve source of file %s\n", debugstr_w(file->File));
 240
 241     if (file->IsCompressed)
 242         return NULL;
 243
 244     p = resolve_folder(package, file->Component->Directory,
 245                        TRUE, FALSE, TRUE, NULL);
 246     path = build_directory_name(2, p, file->ShortName);
 247
 248     if (file->LongName &&
 249         GetFileAttributesW(path) == INVALID_FILE_ATTRIBUTES)
 250     {
 251         msi_free(path);
 252         path = build_directory_name(2, p, file->LongName);
 253     }
 254
 255     msi_free(p);
 256
 257     TRACE("file %s source resolves to %s\n", debugstr_w(file->File),
 258           debugstr_w(path));
 259
 260     return path;
 261 }
 262
 263 LPWSTR resolve_folder(MSIPACKAGE *package, LPCWSTR name, BOOL source,
 264                       BOOL set_prop, BOOL load_prop, MSIFOLDER **folder)
 265 {
 266     MSIFOLDER *f;
 267     LPWSTR p, path = NULL, parent;
 268
 269     TRACE("Working to resolve %s\n",debugstr_w(name));
 270
 271     if (!name)
 272         return NULL;
 273
 274     if (!lstrcmpW(name,cszSourceDir))
 275         name = cszTargetDir;
 276
 277     f = get_loaded_folder( package, name );
 278     if (!f)
 279         return NULL;
 280
 281     /* special resolving for Target and Source root dir */
 282     if (!strcmpW(name,cszTargetDir))
 283     {
 284         if (!f->ResolvedTarget && !f->Property)
 285         {
 286             LPWSTR check_path;
 287             check_path = msi_dup_property( package, cszTargetDir );
 288             if (!check_path)
 289             {
 290                 check_path = msi_dup_property( package, cszRootDrive );
 291                 if (set_prop)
 292                     MSI_SetPropertyW(package,cszTargetDir,check_path);
 293             }
 294
 295             /* correct misbuilt target dir */
 296             path = build_directory_name(2, check_path, NULL);
 297             clean_spaces_from_path( path );
 298             if (strcmpiW(path,check_path)!=0)
 299                 MSI_SetPropertyW(package,cszTargetDir,path);
 300             msi_free(check_path);
 301
 302             f->ResolvedTarget = path;
 303         }
 304
 305         if (!f->ResolvedSource)
 306             f->ResolvedSource = get_source_root( package );
 307     }
 308
 309     if (folder)
 310         *folder = f;
 311
 312     if (!source && f->ResolvedTarget)
 313     {
 314         path = strdupW( f->ResolvedTarget );
 315         TRACE("   already resolved to %s\n",debugstr_w(path));
 316         return path;
 317     }
 318
 319     if (source && f->ResolvedSource)
 320     {
 321         path = strdupW( f->ResolvedSource );
 322         TRACE("   (source)already resolved to %s\n",debugstr_w(path));
 323         return path;
 324     }
 325
 326     if (!source && f->Property)
 327     {
 328         path = build_directory_name( 2, f->Property, NULL );
 329
 330         TRACE("   internally set to %s\n",debugstr_w(path));
 331         if (set_prop)
 332             MSI_SetPropertyW( package, name, path );
 333         return path;
 334     }
 335
 336     if (!source && load_prop && (path = msi_dup_property( package, name )))
 337     {
 338         f->ResolvedTarget = strdupW( path );
 339         TRACE("   property set to %s\n", debugstr_w(path));
 340         return path;
 341     }
 342
 343     if (!f->Parent)
 344         return path;
 345
 346     parent = f->Parent;
 347
 348     TRACE(" ! Parent is %s\n", debugstr_w(parent));
 349
 350     p = resolve_folder(package, parent, source, set_prop, load_prop, NULL);
 351     if (!source)
 352     {
 353         TRACE("   TargetDefault = %s\n", debugstr_w(f->TargetDefault));
 354
 355         path = build_directory_name( 3, p, f->TargetDefault, NULL );
 356         clean_spaces_from_path( path );
 357         f->ResolvedTarget = strdupW( path );
 358         TRACE("target -> %s\n", debugstr_w(path));
 359         if (set_prop)
 360             MSI_SetPropertyW(package,name,path);
 361     }
 362     else
 363     {
 364         path = NULL;
 365
 366         if (package->WordCount & msidbSumInfoSourceTypeCompressed)
 367             path = get_source_root( package );
 368         else if (package->WordCount & msidbSumInfoSourceTypeSFN)
 369             path = build_directory_name( 3, p, f->SourceShortPath, NULL );
 370         else
 371             path = build_directory_name( 3, p, f->SourceLongPath, NULL );
 372
 373         TRACE("source -> %s\n", debugstr_w(path));
 374         f->ResolvedSource = strdupW( path );
 375     }
 376     msi_free(p);
 377
 378     return path;
 379 }
 380
 381 /* wrapper to resist a need for a full rewrite right now */
 382 DWORD deformat_string(MSIPACKAGE *package, LPCWSTR ptr, WCHAR** data )
 383 {
 384     if (ptr)
 385     {
 386         MSIRECORD *rec = MSI_CreateRecord(1);
 387         DWORD size = 0;
 388
 389         MSI_RecordSetStringW(rec,0,ptr);
 390         MSI_FormatRecordW(package,rec,NULL,&size);
 391
 392         size++;
 393         *data = msi_alloc(size*sizeof(WCHAR));
 394         if (size > 1)
 395             MSI_FormatRecordW(package,rec,*data,&size);
 396         else
 397             *data[0] = 0;
 398
 399         msiobj_release( &rec->hdr );
 400         return sizeof(WCHAR)*size;
 401     }
 402
 403     *data = NULL;
 404     return 0;
 405 }
 406
 407 UINT schedule_action(MSIPACKAGE *package, UINT script, LPCWSTR action)
 408 {
 409     UINT count;
 410     LPWSTR *newbuf = NULL;
 411     if (script >= TOTAL_SCRIPTS)
 412     {
 413         FIXME("Unknown script requested %i\n",script);
 414         return ERROR_FUNCTION_FAILED;
 415     }
 416     TRACE("Scheduling Action %s in script %i\n",debugstr_w(action), script);
 417
 418     count = package->script->ActionCount[script];
 419     package->script->ActionCount[script]++;
 420     if (count != 0)
 421         newbuf = msi_realloc( package->script->Actions[script],
 422                         package->script->ActionCount[script]* sizeof(LPWSTR));
 423     else
 424         newbuf = msi_alloc( sizeof(LPWSTR));
 425
 426     newbuf[count] = strdupW(action);
 427     package->script->Actions[script] = newbuf;
 428
 429    return ERROR_SUCCESS;
 430 }
 431
 432 void msi_free_action_script(MSIPACKAGE *package, UINT script)
 433 {
 434     UINT i;
 435     for (i = 0; i < package->script->ActionCount[script]; i++)
 436         msi_free(package->script->Actions[script][i]);
 437
 438     msi_free(package->script->Actions[script]);
 439     package->script->Actions[script] = NULL;
 440     package->script->ActionCount[script] = 0;
 441 }
 442
 443 /*
 444  *  build_directory_name()
 445  *
 446  *  This function is to save messing round with directory names
 447  *  It handles adding backslashes between path segments,
 448  *   and can add \ at the end of the directory name if told to.
 449  *
 450  *  It takes a variable number of arguments.
 451  *  It always allocates a new string for the result, so make sure
 452  *   to free the return value when finished with it.
 453  *
 454  *  The first arg is the number of path segments that follow.
 455  *  The arguments following count are a list of path segments.
 456  *  A path segment may be NULL.
 457  *
 458  *  Path segments will be added with a \ separating them.
 459  *  A \ will not be added after the last segment, however if the
 460  *    last segment is NULL, then the last character will be a \
 461  *
 462  */
 463 LPWSTR build_directory_name(DWORD count, ...)
 464 {
 465     DWORD sz = 1, i;
 466     LPWSTR dir;
 467     va_list va;
 468
 469     va_start(va,count);
 470     for(i=0; i<count; i++)
 471     {
 472         LPCWSTR str = va_arg(va,LPCWSTR);
 473         if (str)
 474             sz += strlenW(str) + 1;
 475     }
 476     va_end(va);
 477
 478     dir = msi_alloc(sz*sizeof(WCHAR));
 479     dir[0]=0;
 480
 481     va_start(va,count);
 482     for(i=0; i<count; i++)
 483     {
 484         LPCWSTR str = va_arg(va,LPCWSTR);
 485         if (!str)
 486             continue;
 487         strcatW(dir, str);
 488         if( ((i+1)!=count) && dir[strlenW(dir)-1]!='\\')
 489             strcatW(dir, szBackSlash);
 490     }
 491     return dir;
 492 }
 493
 494 /***********************************************************************
 495  *            create_full_pathW
 496  *
 497  * Recursively create all directories in the path.
 498  *
 499  * shamelessly stolen from setupapi/queue.c
 500  */
 501 BOOL create_full_pathW(const WCHAR *path)
 502 {
 503     BOOL ret = TRUE;
 504     int len;
 505     WCHAR *new_path;
 506
 507     new_path = msi_alloc( (strlenW(path) + 1) * sizeof(WCHAR));
 508
 509     strcpyW(new_path, path);
 510
 511     while((len = strlenW(new_path)) && new_path[len - 1] == '\\')
 512     new_path[len - 1] = 0;
 513
 514     while(!CreateDirectoryW(new_path, NULL))
 515     {
 516         WCHAR *slash;
 517         DWORD last_error = GetLastError();
 518         if(last_error == ERROR_ALREADY_EXISTS)
 519             break;
 520
 521         if(last_error != ERROR_PATH_NOT_FOUND)
 522         {
 523             ret = FALSE;
 524             break;
 525         }
 526
 527         if(!(slash = strrchrW(new_path, '\\')))
 528         {
 529             ret = FALSE;
 530             break;
 531         }
 532
 533         len = slash - new_path;
 534         new_path[len] = 0;
 535         if(!create_full_pathW(new_path))
 536         {
 537             ret = FALSE;
 538             break;
 539         }
 540         new_path[len] = '\\';
 541     }
 542
 543     msi_free(new_path);
 544     return ret;
 545 }
 546
 547 void ui_progress(MSIPACKAGE *package, int a, int b, int c, int d )
 548 {
 549     MSIRECORD * row;
 550
 551     row = MSI_CreateRecord(4);
 552     MSI_RecordSetInteger(row,1,a);
 553     MSI_RecordSetInteger(row,2,b);
 554     MSI_RecordSetInteger(row,3,c);
 555     MSI_RecordSetInteger(row,4,d);
 556     MSI_ProcessMessage(package, INSTALLMESSAGE_PROGRESS, row);
 557     msiobj_release(&row->hdr);
 558
 559     msi_dialog_check_messages(NULL);
 560 }
 561
 562 void ui_actiondata(MSIPACKAGE *package, LPCWSTR action, MSIRECORD * record)
 563 {
 564     static const WCHAR Query_t[] =
 565         {'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
 566          '`','A','c','t','i','o', 'n','T','e','x','t','`',' ',
 567          'W','H','E','R','E',' ', '`','A','c','t','i','o','n','`',' ','=',
 568          ' ','\'','%','s','\'',0};
 569     WCHAR message[1024];
 570     MSIRECORD * row = 0;
 571     DWORD size;
 572
 573     if (!package->LastAction || strcmpW(package->LastAction,action))
 574     {
 575         row = MSI_QueryGetRecord(package->db, Query_t, action);
 576         if (!row)
 577             return;
 578
 579         if (MSI_RecordIsNull(row,3))
 580         {
 581             msiobj_release(&row->hdr);
 582             return;
 583         }
 584
 585         /* update the cached actionformat */
 586         msi_free(package->ActionFormat);
 587         package->ActionFormat = msi_dup_record_field(row,3);
 588
 589         msi_free(package->LastAction);
 590         package->LastAction = strdupW(action);
 591
 592         msiobj_release(&row->hdr);
 593     }
 594
 595     MSI_RecordSetStringW(record,0,package->ActionFormat);
 596     size = 1024;
 597     MSI_FormatRecordW(package,record,message,&size);
 598
 599     row = MSI_CreateRecord(1);
 600     MSI_RecordSetStringW(row,1,message);
 601
 602     MSI_ProcessMessage(package, INSTALLMESSAGE_ACTIONDATA, row);
 603
 604     msiobj_release(&row->hdr);
 605 }
 606
 607 BOOL ACTION_VerifyComponentForAction( const MSICOMPONENT* comp, INSTALLSTATE check )
 608 {
 609     if (!comp)
 610         return FALSE;
 611
 612     if (comp->ActionRequest == check)
 613         return TRUE;
 614     else
 615         return FALSE;
 616 }
 617
 618 BOOL ACTION_VerifyFeatureForAction( const MSIFEATURE* feature, INSTALLSTATE check )
 619 {
 620     if (!feature)
 621         return FALSE;
 622
 623     if (feature->ActionRequest == check)
 624         return TRUE;
 625     else
 626         return FALSE;
 627 }
 628
 629 void reduce_to_longfilename(WCHAR* filename)
 630 {
 631     LPWSTR p = strchrW(filename,'|');
 632     if (p)
 633         memmove(filename, p+1, (strlenW(p+1)+1)*sizeof(WCHAR));
 634 }
 635
 636 LPWSTR create_component_advertise_string(MSIPACKAGE* package,
 637                 MSICOMPONENT* component, LPCWSTR feature)
 638 {
 639     static const WCHAR fmt[] = {'%','s','%','s','%','c','%','s',0};
 640     WCHAR productid_85[21], component_85[21];
 641     LPWSTR output = NULL;
 642     DWORD sz = 0;
 643     GUID clsid;
 644
 645     /* > is used if there is a component GUID and < if not.  */
 646
 647     productid_85[0] = 0;
 648     component_85[0] = 0;
 649
 650     CLSIDFromString(package->ProductCode, &clsid);
 651     encode_base85_guid(&clsid, productid_85);
 652
 653     if (component)
 654     {
 655         CLSIDFromString(component->ComponentId, &clsid);
 656         encode_base85_guid(&clsid, component_85);
 657     }
 658
 659     TRACE("prod=%s feat=%s comp=%s\n", debugstr_w(productid_85),
 660           debugstr_w(feature), debugstr_w(component_85));
 661
 662     sz = 20 + lstrlenW(feature) + 20 + 3;
 663
 664     output = msi_alloc_zero(sz*sizeof(WCHAR));
 665
 666     sprintfW(output, fmt, productid_85, feature,
 667              component?'>':'<', component_85);
 668
 669     return output;
 670 }
 671
 672 /* update component state based on a feature change */
 673 void ACTION_UpdateComponentStates(MSIPACKAGE *package, LPCWSTR szFeature)
 674 {
 675     INSTALLSTATE newstate;
 676     MSIFEATURE *feature;
 677     ComponentList *cl;
 678
 679     feature = get_loaded_feature(package,szFeature);
 680     if (!feature)
 681         return;
 682
 683     newstate = feature->ActionRequest;
 684
 685     if (newstate == INSTALLSTATE_ABSENT)
 686         newstate = INSTALLSTATE_UNKNOWN;
 687
 688     LIST_FOR_EACH_ENTRY( cl, &feature->Components, ComponentList, entry )
 689     {
 690         MSICOMPONENT* component = cl->component;
 691
 692         TRACE("MODIFYING(%i): Component %s (Installed %i, Action %i, Request %i)\n",
 693             newstate, debugstr_w(component->Component), component->Installed,
 694             component->Action, component->ActionRequest);
 695
 696         if (!component->Enabled)
 697             continue;
 698
 699         if (newstate == INSTALLSTATE_LOCAL)
 700             msi_component_set_state(package, component, INSTALLSTATE_LOCAL);
 701         else
 702         {
 703             ComponentList *clist;
 704             MSIFEATURE *f;
 705
 706             component->hasLocalFeature = FALSE;
 707
 708             msi_component_set_state(package, component, newstate);
 709
 710             /*if any other feature wants is local we need to set it local*/
 711             LIST_FOR_EACH_ENTRY( f, &package->features, MSIFEATURE, entry )
 712             {
 713                 if ( f->ActionRequest != INSTALLSTATE_LOCAL &&
 714                      f->ActionRequest != INSTALLSTATE_SOURCE )
 715                 {
 716                     continue;
 717                 }
 718
 719                 LIST_FOR_EACH_ENTRY( clist, &f->Components, ComponentList, entry )
 720                 {
 721                     if ( clist->component == component &&
 722                          (f->ActionRequest == INSTALLSTATE_LOCAL ||
 723                           f->ActionRequest == INSTALLSTATE_SOURCE) )
 724                     {
 725                         TRACE("Saved by %s\n", debugstr_w(f->Feature));
 726                         component->hasLocalFeature = TRUE;
 727
 728                         if (component->Attributes & msidbComponentAttributesOptional)
 729                         {
 730                             if (f->Attributes & msidbFeatureAttributesFavorSource)
 731                                 msi_component_set_state(package, component, INSTALLSTATE_SOURCE);
 732                             else
 733                                 msi_component_set_state(package, component, INSTALLSTATE_LOCAL);
 734                         }
 735                         else if (component->Attributes & msidbComponentAttributesSourceOnly)
 736                             msi_component_set_state(package, component, INSTALLSTATE_SOURCE);
 737                         else
 738                             msi_component_set_state(package, component, INSTALLSTATE_LOCAL);
 739                     }
 740                 }
 741             }
 742         }
 743         TRACE("Result (%i): Component %s (Installed %i, Action %i, Request %i)\n",
 744             newstate, debugstr_w(component->Component), component->Installed,
 745             component->Action, component->ActionRequest);
 746     }
 747 }
 748
 749 UINT register_unique_action(MSIPACKAGE *package, LPCWSTR action)
 750 {
 751     UINT count;
 752     LPWSTR *newbuf = NULL;
 753
 754     if (!package->script)
 755         return FALSE;
 756
 757     TRACE("Registering Action %s as having fun\n",debugstr_w(action));
 758
 759     count = package->script->UniqueActionsCount;
 760     package->script->UniqueActionsCount++;
 761     if (count != 0)
 762         newbuf = msi_realloc( package->script->UniqueActions,
 763                         package->script->UniqueActionsCount* sizeof(LPWSTR));
 764     else
 765         newbuf = msi_alloc( sizeof(LPWSTR));
 766
 767     newbuf[count] = strdupW(action);
 768     package->script->UniqueActions = newbuf;
 769
 770     return ERROR_SUCCESS;
 771 }
 772
 773 BOOL check_unique_action(const MSIPACKAGE *package, LPCWSTR action)
 774 {
 775     UINT i;
 776
 777     if (!package->script)
 778         return FALSE;
 779
 780     for (i = 0; i < package->script->UniqueActionsCount; i++)
 781         if (!strcmpW(package->script->UniqueActions[i],action))
 782             return TRUE;
 783
 784     return FALSE;
 785 }
 786
 787 WCHAR* generate_error_string(MSIPACKAGE *package, UINT error, DWORD count, ... )
 788 {
 789     static const WCHAR query[] = {'S','E','L','E','C','T',' ','`','M','e','s','s','a','g','e','`',' ','F','R','O','M',' ','`','E','r','r','o','r','`',' ','W','H','E','R','E',' ','`','E','r','r','o','r','`',' ','=',' ','%','i',0};
 790
 791     MSIRECORD *rec;
 792     MSIRECORD *row;
 793     DWORD size = 0;
 794     DWORD i;
 795     va_list va;
 796     LPCWSTR str;
 797     LPWSTR data;
 798
 799     row = MSI_QueryGetRecord(package->db, query, error);
 800     if (!row)
 801         return 0;
 802
 803     rec = MSI_CreateRecord(count+2);
 804
 805     str = MSI_RecordGetString(row,1);
 806     MSI_RecordSetStringW(rec,0,str);
 807     msiobj_release( &row->hdr );
 808     MSI_RecordSetInteger(rec,1,error);
 809
 810     va_start(va,count);
 811     for (i = 0; i < count; i++)
 812     {
 813         str = va_arg(va,LPCWSTR);
 814         MSI_RecordSetStringW(rec,(i+2),str);
 815     }
 816     va_end(va);
 817
 818     MSI_FormatRecordW(package,rec,NULL,&size);
 819
 820     size++;
 821     data = msi_alloc(size*sizeof(WCHAR));
 822     if (size > 1)
 823         MSI_FormatRecordW(package,rec,data,&size);
 824     else
 825         data[0] = 0;
 826     msiobj_release( &rec->hdr );
 827     return data;
 828 }